#include <stdio.h>

enum DAY
{
    MON=1, TUE, WED=5, THU, FRI, SAT, SUN
} day;
int main()
{
    // 遍历枚举元素
    for (day = MON; day <= SUN; day++)
    {
        printf("enum element: %d \n", day);
    }
    day = 100;
    printf("%d \n", day);
}


